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  3. A Next Generation Network(NGN)is a (96) network，which is able to provide Telecommunication Services to users and to make use of

A Next Generation Network(NGN)is a (96) network，which is able to provide Telecommunication Services to users and to make use of

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问题 A Next Generation Network(NGN)is a (96) network，which is able to provide Telecommunication Services to users and to make use of multiple broadband，QoS—enabled transport technologies and in which service—related functions are (97) of the underlying transport-related technologies．
(96)
选项 A、ISDN   
B、ATM   
C、circuit—based
D、packet—based
答案D
解析
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